Concrete wall construction.



L. c. EGLOFF. CONCRETE WALL CONSTRUCTION.

vAPPLICA''ON FILED APR. l| T916.

Patented Sept. 18, 1917.

N .s x y mf .K

Luton/m11 UNITED sTATEs PATENT OEEIOE.

LEOPOLD C. EGLOFF, OF FOREST PARK, ILLINOIS.

CONCRETE WALL CONSTRUCTION.

To all whom t may concern:

Be it known that I, LEOPOLD C. EGLOFF, a citizen of the United States,and a resident of Forest Park, in the countyiof Cook and State ofIllinois, have invented a new and Improved Concrete Wall Construction,of which the following is a full, clear, and exact description.

The general object of my invention is to provide an improved mode ofconstructing concrete walls whereby to eliminate the erection of forms.The stated object of my invention is attained by producing rectangularconcrete slabs Which are reinforced with Hat steel bars. The reinforcebars protrude from the slabs adjacent to the vertical meeting edges andare arranged to receive interlocking and bonding devices connecting the'front and rear slabs of the walls so as to bind the same together, atthe same time interlocking the joining front and the joining rear slabs.The space between the front and rear slabs is filled in with concrete.

The invention will be more particularly explained in the specificdescription following.

Reference is to be had tothe accompanying drawings forming a part of`this invention in which similar reference characters indicatecorresponding parts in all the views.

Figure 1 is a back view showing assembled slabs;

Fig. 2 is an end view with a part broken away;

Fig. 3 is a horizontal section through alined slabs.

In carrying out my invention, rectangular slabs l0 are formed, whichusually, are flat, but may be in curved form for a circular wallconstruction. The meeting edges of the slabs are preferably rabbeted asat 11.

Extending horizontally in the slabs, are preferably iat reinforce bars12, the ends Speccaton of Letters Patent. Patented Sept. 18, 1917.

Application led April 11, 1916. Serial No. 90,344.

13 of which protrude from the faces of the slabs adjacent to the sideedges.` The said protruding ends 13 range at an angle to the plane 'ofthe slab and extend beyond the adjacent vertical side edges so thatadjacent ends 13 will overlap. The ends 13 are broadened and formed withholes 14, the respective holes in the overlapped ends aliningvertically.

The holes 14 receive the downturned hooked ends 15 of tie barsy 16,constituting interlocking and bonding devices, effectively tying thefront and rear slabs together and interlocking the respective reinforcebars 12.

The space between the front and rear slabs v 10, is lled in withconcrete, thereby making a homogeneous wall without requiring theerection of forms in constructing the wall.

Having thus described my invention I claim as new, `and desire to secureby Letters Patent:

A concrete wall including front and rear slabs, reinforce bars ranginghorizontally in said slabs near the upper and lower edges, andprotruding from the inner faces of the slabs near the vertical sideedges thereof, the said protruding ends of the ysaid vreinforce barshaving extensions projecting laterally beyond the said vertical edgesand being Hattened,'the adjacent flattened ends of adjacent barsoverlapping each other in 'horizontal planes adjacent to the inner wallsurfaces and formed with alined vertical holes, and U-shaped horizontalbonding members having their ends depending, the depending endsextending through the alined holes of the bars.

LEOPOLD c. EGLOEE.

Witnesses HERMAN BUENGER, CONRAD MICHALSKY.

